Sergei Ivanovich Lobanov ( 1887 - 1943 ) was a Russian painter. Sergei Ivanovich Lobanov s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 3132.7 USD for Eastern riverscape in 2004 to 31200 USD for Seated Nude by a Mirror in 2013 , based on the size and medium of the artwork.